[R] predict.lm - standard error of predicted means?

[Peter Dalgaard]

mark salsburg <mark.salsburg at gmail.com> writes:

> Can someone please refer me to a function or method that resolves this
> structuring issue:
> 
> I have two matrices with identical colnames (89), but varying number
> of observations:
> 
> matrix A                                matrix B 
> 
> 217 x 89                              16063 x 89
> 
> I want to creat one matrix C that has both matrices adjacent to one
> another, where matrix A is duplicated many times to create the same
> row number for matrix B, i.e. 16063.
> 
> matrixA matrix B
> matrixA
> matrixA
> 
> so matrix C will be 16063 x 178
> 
> I've tried cbind() and merge() with no success..

A: What the !!##"¤ does this have to do with the subject line?

B: This should do it:

cbind(A[rep(1:217,length=16063),], B)

-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
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